Polyelectrolyte-based nanofiltration membranes with exceptional performance in Mg2+/Li+ separation in a wide range of solution conditions
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Nanofiltration
Brine
An improved semi-empirical model used to predict the separation performance of salt lake brine by nanofiltration (NF) membrane was obtained.The transmission of the eight single salts is in the order of NaCl > LiCl > KCl > MgCl 2 > Li 2 SO 4 > K 2 SO 4 > Na 2 SO 4 > MgSO 4 .In the double salts permeation experiment, the regulation coefficient was revised by introducing an adjustment equation A in this model, because the calculated values deviated from the experimental data.The modified semi-empirical model and the experimental data under different concentration conditions has a good consistency.It shows that the semi-empirical model can be used to predict the transmission of salt lake brine.
Nanofiltration
Brine
Salt lake
Separation (statistics)
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Abstract This study investigated the efficiency of mycoestrogens removal from water using the sequential combinations of two processes: ozonation and nanofiltration. The results were compared with ones obtained for water treatment via ozonation and nanofiltration performed as single-stage operations. The removal of mycoestrogens was improved using the combination of ozonation–nanofiltration processes in comparison to single-stage ozonation system, while a negligible difference was observed with nanofiltration. However, the analyzed system improved the nanofiltration membrane capacity. Ozonation before membrane filtration limited the intensity of the membrane blocking, which adjusted the use of the complex systems in water treatment. Keywords: OzonationNanofiltrationCombined treatmentMycoestrogens removal
Nanofiltration
Filtration (mathematics)
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